:root {
    /* ── 深色科技风（PD技术汇）：深蓝近黑底 + 蓝/青色光效 ── */
    --color-bg: #060b16;
    --color-surface: #0c1525;
    --color-surface-2: #121d33;
    --color-border: rgba(122, 162, 214, 0.16);
    --color-text: #e8eefb;
    --color-text-muted: #93a6c4;
    --color-primary: #4a8af4;
    --color-primary-hover: #76a9f7;
    --color-primary-soft: rgba(var(--glow-color), 0.14);
    --color-accent: #6fa8f7;
    --color-danger: #f87171;
    --color-danger-hover: #ef4444;
    --color-danger-soft: rgba(248, 113, 113, 0.14);
    --color-success: #34d399;
    --color-success-soft: rgba(52, 211, 153, 0.14);
    --color-warning: #fbbf24;
    --color-warning-strong: #d97706;
    --color-warning-soft: rgba(251, 191, 36, 0.12);
    --color-info: #4a8af4;
    --color-info-soft: rgba(var(--glow-color), 0.14);
    --color-logo-bg: #ffffff;

    /* 光效（--glow-color 由主题动态注入覆盖，所有辉光跟随主题切换） */
    --glow-color: 74, 138, 244;
    --glow-cyan: 0 0 26px -4px rgba(var(--glow-color), 0.55);
    --glow-soft: 0 10px 34px -12px rgba(var(--glow-color), 0.38);
    --ring-cyan: 0 0 0 1px rgba(var(--glow-color), 0.45), 0 8px 30px -8px rgba(var(--glow-color), 0.45);

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 16px;

    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-8: 48px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.45);

    --font-sans: "Inter", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
    --transition: 0.15s ease;
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    padding: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-hover); }

.logo-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--color-logo-bg);
    border-radius: var(--radius-lg);
    padding: var(--space-2);
    box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.04), var(--shadow-sm);
}

@media (min-width: 1024px) {
    .logo-badge {
        padding: var(--space-3);
    }
}

.container {
    width: 100%;
    max-width: 1080px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* Header */
.site-header {
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 10;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.brand {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    font-size: 17px;
    color: var(--color-text);
}
.brand-icon { color: var(--color-primary); }
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}
.nav-links a { color: var(--color-text-muted); font-weight: 500; }
.nav-links a:hover { color: var(--color-text); }
.nav-user { color: var(--color-text-muted); font-size: 14px; }

.inline-form { display: inline; margin: 0; }

/* Main */
.main { padding: var(--space-6) var(--space-4); min-height: 60vh; }

h1 { font-size: 30px; line-height: 1.25; margin: 0 0 var(--space-4); }
h2 { font-size: 22px; margin: var(--space-6) 0 var(--space-4); }
h3 { font-size: 17px; margin: 0 0 var(--space-2); }
p { margin: 0 0 var(--space-3); }
.muted { color: var(--color-text-muted); }

/* Cards */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-5);
    box-shadow: var(--shadow-sm);
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-4);
}
.code {
    display: inline-block;
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 13px;
    color: var(--color-primary);
    background: var(--color-primary-soft);
    padding: 2px var(--space-2);
    border-radius: var(--radius-sm);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: var(--space-2) var(--space-4);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition), border-color var(--transition), color var(--transition);
    background: var(--color-surface-2);
    color: var(--color-text);
}
.btn:hover { background: var(--color-border); }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; }
.btn-sm { padding: var(--space-1) var(--space-3); font-size: 14px; }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-link {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    font: inherit;
    font-weight: 500;
    padding: 0;
}
.btn-link:hover { color: var(--color-text); }

/* Forms */
.field { margin-bottom: var(--space-4); }
.field label {
    display: block;
    font-weight: 600;
    font-size: 14px;
    margin-bottom: var(--space-2);
}
.input, .textarea, .select {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    font: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
}
.input:focus, .textarea:focus, .select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-soft);
}
.textarea { min-height: 120px; resize: vertical; }
.form-hint { font-size: 13px; color: var(--color-text-muted); margin-top: var(--space-1); }
.char-count { display: inline-block; margin-left: 8px; padding: 1px 7px; border-radius: 999px; background: var(--color-surface-2); color: var(--color-text-muted); font-variant-numeric: tabular-nums; }
.char-count.over { background: var(--color-danger-soft); color: var(--color-danger); font-weight: 600; }
.field-error { color: var(--color-danger); font-size: 13px; margin-top: var(--space-1); }

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-4);
    font-size: 14px;
}
.alert-success { background: var(--color-success-soft); color: var(--color-success); border: 1px solid var(--color-success); }
.alert-danger { background: var(--color-danger-soft); color: var(--color-danger); border: 1px solid var(--color-danger); }

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
    padding: var(--space-6) 0;
    margin-top: var(--space-8);
    font-size: 14px;
}
.site-footer p { margin: 0 0 var(--space-1); }

/* Hero */
.hero {
    background: var(--color-primary-soft);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    margin-bottom: var(--space-6);
}
.hero h1 { margin-bottom: var(--space-3); }
.hero .lead { font-size: 17px; color: var(--color-text-muted); max-width: 640px; }

/* Search box */
.search-box {
    width: 100%;
    max-width: 360px;
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font: inherit;
    margin-bottom: var(--space-4);
}
.search-box:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-soft); }

/* ===== Link cards ===== */
.link-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.link-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    color: var(--color-text);
}
.link-card h3 { color: var(--color-primary); }

/* ===== Filter bar ===== */
.filter-bar {
    display: flex;
    gap: var(--space-3);
    align-items: center;
    flex-wrap: wrap;
}
.filter-bar .input { max-width: 280px; }
.filter-bar .select { max-width: 200px; }

/* ===== Nav admin badge ===== */
.nav-admin {
    color: var(--color-primary) !important;
    font-weight: 700 !important;
}

/* ===== Meta text ===== */
.meta {
    font-size: 13px;
    color: var(--color-text-muted);
    margin: 0 0 var(--space-2);
}

/* ===== Prose content ===== */
.prose { line-height: 1.7; word-break: break-word; }
.prose p { margin: 0 0 var(--space-3); }

/* ===== List container ===== */
.list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* ===== Reply card ===== */
.reply { padding: var(--space-4); }

/* ===== Danger button ===== */
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: var(--color-danger-hover); color: #fff; }

/* ===== Pagination (bootstrap-5 compatible) ===== */
.pagination {
    display: flex;
    gap: var(--space-1);
    list-style: none;
    padding: 0;
    margin: var(--space-5) 0 0;
}
.page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-size: 14px;
    text-decoration: none;
    transition: background var(--transition), border-color var(--transition);
}
.page-link:hover { background: var(--color-surface-2); border-color: var(--color-primary); color: var(--color-primary); }
.page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.page-item.disabled .page-link { opacity: 0.4; cursor: not-allowed; pointer-events: none; }

/* ===== Admin layout ===== */
.admin-body { background: var(--color-surface); }
.admin-shell {
    display: flex;
    min-height: 100vh;
}
.admin-side {
    width: 240px;
    background: var(--color-bg);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.admin-brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-weight: 700;
    font-size: 16px;
    padding: var(--space-5) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text);
}
.admin-brand svg { color: var(--color-primary); }
.admin-nav {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--space-3) 0;
}
.admin-nav a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    color: var(--color-text-muted);
    font-weight: 500;
    font-size: 14px;
    border-left: 3px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.admin-nav a:hover { background: var(--color-surface); color: var(--color-text); }
.admin-nav a.active { background: var(--color-primary-soft); color: var(--color-primary); border-left-color: var(--color-primary); font-weight: 600; }
.admin-foot {
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}
.admin-foot a { display: flex; align-items: center; gap: var(--space-2); font-size: 14px; color: var(--color-text-muted); }
.admin-foot a:hover { color: var(--color-text); }

.admin-main {
    flex: 1;
    padding: var(--space-6);
    overflow-x: auto;
}
.admin-topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-5);
    flex-wrap: wrap;
    gap: var(--space-3);
}
.admin-topbar h1 { margin: 0; }
.admin-actions { display: flex; gap: var(--space-2); }

/* ===== Admin stat grid ===== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}
.stat-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-5);
    text-align: center;
    box-shadow: var(--shadow-sm);
}
.stat-num {
    display: block;
    font-size: 32px;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1.2;
}
.stat-label {
    display: block;
    font-size: 14px;
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* ===== Admin two-column ===== */
.admin-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

/* ===== Mini row ===== */
.mini-row {
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
}
.mini-row:last-child { border-bottom: none; }

/* ===== Data table ===== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-bg);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.data-table th,
.data-table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
    font-size: 14px;
}
.data-table th {
    background: var(--color-surface-2);
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 13px;
    white-space: nowrap;
}
.data-table tbody tr:hover { background: var(--color-surface); }
.data-table td.col-op,
.data-table th.col-op { text-align: right; white-space: nowrap; }
.row-actions {
    display: flex;
    gap: var(--space-1);
    justify-content: flex-end;
    align-items: center;
}
.row-actions form { display: inline; margin: 0; }

/* ===== Form card & actions ===== */
.form-card {
    max-width: 720px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
}
.form-actions {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid var(--color-border);
}

/* ===== Row card (horizontal link card with arrow) ===== */
.row-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    color: var(--color-text);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition), box-shadow var(--transition);
}
.row-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow);
    color: var(--color-text);
}
.row-card h3 { color: var(--color-primary); }
.row-card svg { color: var(--color-text-muted); flex-shrink: 0; }
.row-card:hover svg { color: var(--color-primary); }

/* ===== Spec block ===== */
.spec-block {
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: var(--space-4);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-wrap;
    overflow-x: auto;
}

/* ===== Badge ===== */
.badge {
    display: inline-block;
    padding: 2px var(--space-2);
    font-size: 12px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    background: var(--color-surface-2);
    color: var(--color-text-muted);
}
.badge-primary { background: var(--color-primary-soft); color: var(--color-primary); }

/* 角色徽章（与 RBAC 五角色对应） */
.badge-role-super_admin { background: var(--color-warning-soft); color: var(--color-warning); }
.badge-role-admin      { background: var(--color-primary-soft); color: var(--color-primary); }
.badge-role-forum_admin{ background: var(--color-success-soft); color: var(--color-success); }
.badge-role-staff      { background: var(--color-info-soft);   color: var(--color-info); }
.badge-role-user       { background: var(--color-surface-2);   color: var(--color-text-muted); }

/* 用户权限勾选组 */
.perm-group { border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--space-3) var(--space-4); margin-bottom: var(--space-3); }
.perm-group-title { font-weight: 600; margin-bottom: var(--space-2); color: var(--color-text); }
.perm-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: var(--space-2) var(--space-4); }
.perm-item { display: flex; align-items: center; gap: var(--space-2); font-size: 13px; }
.perm-item input { width: 16px; height: 16px; accent-color: var(--color-primary); }
.role-hint { font-size: 13px; color: var(--color-text-muted); margin: var(--space-2) 0 var(--space-4); }

/* ===== HR inside cards ===== */
.card hr { border: none; border-top: 1px solid var(--color-border); margin: var(--space-4) 0; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .nav-links { gap: var(--space-2); flex-wrap: wrap; }
    .admin-shell { flex-direction: column; }
    .admin-side {
        width: 100%;
        height: auto;
        position: relative;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }
    .admin-nav { flex-direction: row; flex-wrap: wrap; padding: var(--space-2); }
    .admin-nav a { border-left: none; border-bottom: 3px solid transparent; padding: var(--space-2) var(--space-3); }
    .admin-nav a.active { border-left: none; border-bottom-color: var(--color-primary); }
    .admin-foot { flex-direction: row; }
    .admin-cols { grid-template-columns: 1fr; }
    .filter-bar { flex-direction: column; align-items: stretch; }
    .filter-bar .input, .filter-bar .select { max-width: 100%; }
    .data-table { font-size: 13px; }
    .data-table th, .data-table td { padding: var(--space-2) var(--space-3); }
}

/* ── 品牌 logo / 等级 / 标签 增强 ── */
.brand-logo { height: 28px; width: auto; display: block; }
.level-badge {
    display: inline-block;
    padding: 1px 8px;
    border-radius: 999px;
    background: var(--color-primary);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    margin-right: 6px;
}
.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-soft);
    color: var(--color-primary);
    font-size: 12px;
    margin-left: 8px;
}
.lead { font-size: 16px; color: var(--color-text-muted); line-height: 1.7; }
.icp-link { color: var(--color-text-muted); margin-left: 8px; text-decoration: none; }
.icp-link:hover { text-decoration: underline; }
.level-bar {
    height: 8px;
    border-radius: 999px;
    background: var(--color-surface-2);
    overflow: hidden;
    margin: 8px 0;
}
.level-bar-fill {
    height: 100%;
    background: var(--color-primary);
    border-radius: 999px;
    transition: width .3s ease;
}

/* 状态文字色（审核队列/文章列表用） */
.text-warning { color: var(--color-warning-strong); }
.text-danger { color: var(--color-danger); }
.text-success { color: var(--color-success); }

/* ── 数据库管理页 ── */
.mb-6 { margin-bottom: var(--space-6); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.kv { display: flex; flex-wrap: wrap; gap: var(--space-4) var(--space-6); }
.kv > div { display: flex; flex-direction: column; gap: 2px; }
.kv .muted { font-size: 12px; }
.kv strong { font-size: 16px; font-weight: 600; }
.mig-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: var(--space-2); max-height: 320px; overflow: auto; }
.mig-list li { display: flex; align-items: center; gap: var(--space-2); font-size: 14px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.mig-list.done li { color: var(--color-text-muted); }
.mig-output { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--space-3); font-size: 13px; white-space: pre-wrap; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; overflow: auto; max-height: 360px; }

/* ── Quill 富文本编辑器 ── */
.rich-editor { margin-bottom: var(--space-4); }
.ql-toolbar.ql-snow { border-color: var(--color-border); border-top-left-radius: var(--radius-sm); border-top-right-radius: var(--radius-sm); }
.ql-container.ql-snow { border-color: var(--color-border); border-bottom-left-radius: var(--radius-sm); border-bottom-right-radius: var(--radius-sm); font-family: inherit; font-size: 15px; }
.ql-editor { min-height: 300px; }
.ql-editor.ql-blank::before { color: var(--color-text-muted); font-style: normal; }

/* ════════════ 深色科技风 · 光效工具类（PD技术汇） ════════════ */

/* 文字辉光 */
.glow-text { text-shadow: 0 0 22px rgba(var(--glow-color), 0.55); }

/* 辉光卡片：边框微亮 + 柔和投影，hover 增强 */
.glow-card {
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: var(--shadow);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.glow-card:hover {
    border-color: rgba(var(--glow-color), 0.55);
    box-shadow: var(--ring-cyan);
    transform: translateY(-4px);
}

/* Hero 极光背景：深底 + 蓝/青径向辉光 */
.hero-aurora {
    position: relative;
    background:
        radial-gradient(60% 70% at 18% 12%, rgba(var(--glow-color), 0.20), transparent 60%),
        radial-gradient(55% 65% at 85% 20%, rgba(var(--glow-color), 0.16), transparent 60%),
        radial-gradient(70% 90% at 50% 110%, rgba(var(--glow-color), 0.14), transparent 60%),
        linear-gradient(180deg, #070d1c 0%, #060b16 100%);
    overflow: hidden;
}
/* Hero 网格纹理 */
.hero-grid::before {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(122, 162, 214, 0.07) 1px, transparent 1px),
        linear-gradient(90deg, rgba(122, 162, 214, 0.07) 1px, transparent 1px);
    background-size: 46px 46px;
    mask-image: radial-gradient(70% 70% at 50% 35%, #000 40%, transparent 100%);
    -webkit-mask-image: radial-gradient(70% 70% at 50% 35%, #000 40%, transparent 100%);
    pointer-events: none;
}

/* 区块标题小标 */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-primary);
}
.eyebrow::before {
    content: "";
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

/* 导航链接：hover 下划线高亮 */
.nav-link {
    position: relative;
    color: var(--color-text-muted);
    font-weight: 500;
    transition: color var(--transition);
}
.nav-link::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    height: 2px;
    width: 0;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--color-text); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }

/* 主 CTA 按钮辉光 */
.cta-glow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    color: #04121f;
    font-weight: 700;
    box-shadow: var(--glow-cyan);
    transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
}
.cta-glow:hover {
    transform: translateY(-2px);
    filter: brightness(1.08);
    box-shadow: 0 0 34px -2px rgba(var(--glow-color), 0.75);
    color: #04121f;
}

/* 合作品牌墙：灰度 -> hover 彩色 + 放大 */
.brand-logo-cell {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 84px;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    background: var(--color-surface);
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}
.brand-logo-cell img,
.brand-logo-cell .brand-fallback {
    max-height: 44px;
    width: auto;
    filter: grayscale(1) brightness(1.6);
    opacity: 0.7;
    transition: filter var(--transition), opacity var(--transition), transform var(--transition);
}
.brand-logo-cell:hover {
    border-color: rgba(var(--glow-color), 0.5);
    box-shadow: var(--ring-cyan);
    transform: translateY(-3px);
}
.brand-logo-cell:hover img,
.brand-logo-cell:hover .brand-fallback {
    filter: grayscale(0) brightness(1);
    opacity: 1;
    transform: scale(1.06);
}

/* 数据滚动数字 */
.stat-num {
    font-size: clamp(34px, 5vw, 52px);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-primary);
    text-shadow: 0 0 22px rgba(var(--glow-color), 0.45);
    font-variant-numeric: tabular-nums;
}

/* 后台主题配色选择器 */
.theme-options { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 6px; }
.theme-opt {
    display: inline-flex; align-items: center; gap: 8px; cursor: pointer; position: relative;
    border: 1px solid var(--color-border); border-radius: 10px;
    padding: 8px 12px; font-size: 13px; font-weight: 600; color: var(--color-text-muted);
    transition: border-color .15s, background .15s, color .15s;
}
.theme-opt:hover { border-color: var(--color-primary); }
.theme-opt.active { border-color: var(--color-primary); background: var(--color-primary-soft); color: var(--color-text); }
.theme-opt input { position: absolute; opacity: 0; pointer-events: none; }
.theme-swatch { width: 18px; height: 18px; border-radius: 5px; display: inline-block; box-shadow: 0 0 0 2px rgba(255,255,255,.12); }

/* 卡片图片容器（产品/文章封面） */
.media-cover {
    aspect-ratio: 16 / 10;
    width: 100%;
    object-fit: cover;
    background: linear-gradient(135deg, #0e1830, #0a1326);
}

/* 顶部滚动后加深的背景（由 JS 切换 .scrolled） */
.site-header.scrolled {
    background: rgba(6, 11, 22, 0.92);
    border-bottom-color: rgba(122, 162, 214, 0.22);
}

/* 暗色下输入框/文本域底色 */
.input, .textarea, .select { background: var(--color-surface-2); color: var(--color-text); }
.input:focus, .textarea:focus, .select:focus { box-shadow: 0 0 0 3px var(--color-primary-soft); }

/* 分页/标签在暗色下的微调 */
.page-link { background: var(--color-surface); color: var(--color-text); }
.page-link:hover { background: var(--color-surface-2); }
.page-item.active .page-link { background: var(--color-primary); border-color: var(--color-primary); color: #04121f; }

/* 暗色下的 hero/卡片边框对比增强 */
.hero, .card, .link-card, .row-card, .data-table, .form-card, .stat-card {
    background: var(--color-surface);
    border-color: var(--color-border);
}

/* 滚动揭示动画（仅当 JS 可用时隐藏初始态，避免无脚本时内容不可见） */
.js .reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}
.js .reveal.in {
    opacity: 1;
    transform: none;
}
@media (prefers-reduced-motion: reduce) {
    .js .reveal { opacity: 1; transform: none; transition: none; }
}

/* 区块通用间距 */
.section { padding-top: 64px; padding-bottom: 64px; }
@media (min-width: 1024px) { .section { padding-top: 88px; padding-bottom: 88px; } }

/* 区块标题 */
.section-head { max-width: 720px; }
.section-title { font-size: 28px; font-weight: 800; letter-spacing: -0.01em; color: var(--color-text); }
@media (min-width: 1024px) { .section-title { font-size: 34px; } }
.section-sub { margin-top: 10px; color: var(--color-text-muted); font-size: 15px; }

/* 玻璃卡片（深底微透） */
.glass {
    background: linear-gradient(180deg, rgba(18,29,51,0.9), rgba(12,21,37,0.9));
    border: 1px solid var(--color-border);
    backdrop-filter: blur(6px);
}

/* Hero 标题渐变文字 */
.gradient-text {
    background: linear-gradient(120deg, #e8eefb 0%, #7dd3fc 55%, #22d3ee 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* 暗色下主色按钮/底色文字改为深色以保证对比度 */
.btn-primary { color: #04121f; }
.btn-primary:hover { color: #04121f; }
.bg-primary { color: #04121f; }
a.bg-primary:hover, button.bg-primary:hover { color: #04121f; }

/* ── 首页 Hero 轮播 ─────────────────────────────── */
.hero-carousel { position: relative; }
.hero-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity .6s ease;
    pointer-events: none;
}
.hero-slide.is-active {
    position: relative;
    opacity: 1;
    pointer-events: auto;
}
.hero-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    line-height: 1;
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: background .2s ease;
}
.hero-arrow:hover { background: rgba(255, 255, 255, 0.32); }
.hero-prev { left: 0; }
.hero-next { right: 0; }
.hero-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: -1.5rem;
    z-index: 5;
    display: flex;
    gap: .5rem;
    justify-content: center;
}
.hero-dot {
    width: 10px;
    height: 10px;
    padding: 0;
    border: none;
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: width .2s ease, background .2s ease;
}
.hero-dot.is-active {
    width: 24px;
    background: #fff;
}

/* 页脚富文本区块（后台「站点设置 → 页脚自定义内容」维护） */
.footer-rich {
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-muted);
}
.footer-rich > *:first-child { margin-top: 0; }
.footer-rich > *:last-child { margin-bottom: 0; }
.footer-rich h1, .footer-rich h2, .footer-rich h3, .footer-rich h4 {
    color: var(--color-text);
    margin: 0.6em 0 0.4em;
    font-weight: 600;
}
.footer-rich p { margin: 0 0 0.6em; }
.footer-rich a { color: var(--color-primary); text-decoration: none; }
.footer-rich a:hover { text-decoration: underline; }
.footer-rich ul, .footer-rich ol { padding-left: 1.25rem; margin: 0 0 0.6em; }
.footer-rich img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 0.4em 0;
}
.footer-rich blockquote {
    border-left: 3px solid var(--color-primary);
    padding-left: 0.8em;
    margin: 0.6em 0;
    color: var(--color-text-muted);
}
.footer-rich table { width: 100%; border-collapse: collapse; margin: 0.6em 0; }
.footer-rich th, .footer-rich td { border: 1px solid var(--color-border); padding: 0.4em 0.6em; }

/* ════════════ 富文本渲染（Hero / 页脚 / 文章正文 复用） ════════════
   后台富文本由 Quill 产出语义化 HTML（h1-h3 / p / ul / 行内 color 等）
   + 排版类（ql-align-* / ql-size-* / ql-indent-*）。前台用本块统一渲染，
   不再依赖把 Tailwind 工具类塞进正文。 */

.rich-content { line-height: 1.7; word-break: break-word; }
.rich-content > *:first-child { margin-top: 0; }
.rich-content > *:last-child { margin-bottom: 0; }
.rich-content h1 { font-size: clamp(28px, 4vw, 44px); font-weight: 800; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 0.4em; }
.rich-content h2 { font-size: clamp(22px, 3vw, 32px); font-weight: 700; margin: 0.6em 0 0.35em; }
.rich-content h3 { font-size: clamp(18px, 2.2vw, 24px); font-weight: 600; margin: 0.6em 0 0.35em; }
.rich-content h4 { font-size: clamp(16px, 1.8vw, 19px); font-weight: 600; margin: 0.6em 0 0.35em; }
.rich-content h5, .rich-content h6 { font-weight: 600; margin: 0.5em 0 0.3em; }
.rich-content p { margin: 0 0 0.8em; }
.rich-content ul, .rich-content ol { padding-left: 1.4em; margin: 0 0 0.8em; }
.rich-content li { margin: 0.25em 0; }
.rich-content a { text-decoration: underline; }
.rich-content img { max-width: 100%; height: auto; border-radius: 10px; margin: 0.5em 0; }
.rich-content blockquote { border-left: 3px solid currentColor; padding-left: 0.9em; margin: 0.7em 0; opacity: 0.85; }
.rich-content code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: rgba(127,127,127,0.18); padding: 2px 6px; border-radius: 6px; font-size: 0.9em; }
.rich-content pre { background: rgba(127,127,127,0.14); padding: 1em; border-radius: 10px; overflow: auto; margin: 0.7em 0; }
.rich-content pre code { background: none; padding: 0; }
.rich-content table { width: 100%; border-collapse: collapse; margin: 0.7em 0; }
.rich-content th, .rich-content td { border: 1px solid; padding: 0.45em 0.7em; }
.rich-content hr { border: none; border-top: 1px solid; margin: 1em 0; opacity: 0.3; }
.rich-content strong, .rich-content b { font-weight: 700; }

/* Quill 语义类（编辑器产出，Purifier 现已放行 class） */
.rich-content .ql-align-center { text-align: center; }
.rich-content .ql-align-right { text-align: right; }
.rich-content .ql-align-justify { text-align: justify; }
.rich-content .ql-size-small { font-size: 0.75em; }
.rich-content .ql-size-large { font-size: 1.5em; }
.rich-content .ql-size-huge { font-size: 2.25em; line-height: 1.1; }
.rich-content .ql-indent-1 { padding-left: 2em; }
.rich-content .ql-indent-2 { padding-left: 4em; }
.rich-content .ql-indent-3 { padding-left: 6em; }
.rich-content .ql-indent-4 { padding-left: 8em; }
.rich-content .ql-indent-5 { padding-left: 10em; }
.rich-content .ql-indent-6 { padding-left: 12em; }
.rich-content .ql-indent-7 { padding-left: 14em; }
.rich-content .ql-indent-8 { padding-left: 16em; }
.rich-content .ql-direction-rtl { direction: rtl; text-align: right; }
.rich-content .ql-syntax {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    white-space: pre-wrap;
    background: rgba(127,127,127,0.14);
    padding: 1em;
    border-radius: 10px;
    display: block;
    margin: 0.7em 0;
}

/* 暗底变体：用于首页 Hero 渐变背景（文字默认白） */
.rich-content--on-dark { color: #fff; }
.rich-content--on-dark h1, .rich-content--on-dark h2, .rich-content--on-dark h3,
.rich-content--on-dark h4, .rich-content--on-dark h5, .rich-content--on-dark h6,
.rich-content--on-dark strong, .rich-content--on-dark b { color: #fff; }
.rich-content--on-dark a { color: #7dd3fc; }
.rich-content--on-dark blockquote { border-left-color: rgba(255,255,255,0.5); }
.rich-content--on-dark th, .rich-content--on-dark td { border-color: rgba(255,255,255,0.3); }
.rich-content--on-dark hr { border-top-color: rgba(255,255,255,0.3); }

/* Hero 正文容器：限定可读宽度，避免大屏铺满 */
/* Hero 正文容器：居中排版，限定可读宽度并水平居中 */
.hero-slide-content { max-width: 820px; margin: 0 auto; text-align: center; }

/* Hero 小标签（富文本内可调用） */
.hero-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #7dd3fc;
    margin: 0 0 0.6em;
}

/* Hero 富文本内可复用的排版组件（不依赖 Tailwind 工具类） */
.hero-feature-grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 16px;
    margin: 1.6em 0 0;
}
@media (min-width: 640px) { .hero-feature-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.hero-feature-card {
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 18px 20px;
    backdrop-filter: blur(4px);
}
.hero-feature-card .hf-title { font-size: 18px; font-weight: 700; color: #fff; margin: 0 0 4px; }
.hero-feature-card .hf-desc { font-size: 14px; color: rgba(255, 255, 255, 0.82); margin: 0; }
.hero-callout {
    border: 1px solid rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 16px 20px;
    margin: 1em 0;
}

/* 页脚 / 文章正文同样渲染 Quill 排版类 */
.footer-rich .ql-align-center, .prose .ql-align-center { text-align: center; }
.footer-rich .ql-align-right, .prose .ql-align-right { text-align: right; }
.footer-rich .ql-align-justify, .prose .ql-align-justify { text-align: justify; }
.footer-rich .ql-size-small, .prose .ql-size-small { font-size: 0.75em; }
.footer-rich .ql-size-large, .prose .ql-size-large { font-size: 1.5em; }
.footer-rich .ql-size-huge, .prose .ql-size-huge { font-size: 2.25em; line-height: 1.1; }